NOAA - Conventional Observation Reanalysis (CORe)

CORe is an atmospheric reanalysis from the Climate Prediction Center NCEP/NWS/NOAA with collaboration with Environmental Modeling Center NCEP/NWS/NOAA and Physical Sciences Laboratory NOAA. CORe is designed to replace CDAS (real-time extension to NCEP/NCAR Reanalysis - d090000 on GDEX). CORe covers a similar period of time (1950 to real time compare to 1948 to real time), and was designed for climate monitoring, one of the Climate Prediction Center's major goals. Unlike most modern reanalyses, CORe does not assimilate satellite data except for Atmospheric Motion Vectors (AMV). This was done to eliminate spurious "climate shifts" caused by the ingest of satellite data. This problem affected the earlier NCEP/NCAR and Climate Forecast System Reanalyses. This design emphasizes improving the climate trends and anomalies over getting the best state for a forecast.

To Access Resource:

Questions? Email Resource Support Contact:

  • datahelp@ucar.edu

Temporal Range

  • Begin:  1950-01-01T0000+00
    End:  1978-07-27T1500+00

Keywords

Resource Type dataset
Temporal Range Begin 1950-01-01T0000+00
Temporal Range End 1978-07-27T1500+00
Temporal Resolution N/A
Bounding Box North Lat 89.463
Bounding Box South Lat -89.463
Bounding Box West Long -180.0
Bounding Box East Long 180.0
Spatial Representation grid
Spatial Resolution 0.703 degree
Related Links

Related Resource #1 : NWS notice of change from R1 to CORe

Related Resource #2 : Historical reanalysis

Related Resource #3 : Real-time NOMAD update site

Related Resource #4 : CORe information provided from Climate Prediction Center/NCEP/NOAA

Related Resource #5 : CORe information page on NOAA Open Data Dissemination (NODD)

Related Resource #6 : FTP site for CDAS(R1) like CORe data
Additional Information N/A
Resource Format WMO GRIB2
Standardized Resource Format GRIB
Asset Size 898542.879 MB
Legal Constraints

Creative Commons Attribution 4.0 International License
Access Constraints None
Software Implementation Language N/A

Resource Support Name N/A
Resource Support Email datahelp@ucar.edu
Resource Support Organization
Distributor NSF NCAR Geoscience Data Exchange

Metadata Contact Name N/A
Metadata Contact Email datahelp@ucar.edu
Metadata Contact Organization NSF NCAR Geoscience Data Exchange

Author National Oceanic & Atmospheric Administration
Publisher NSF National Center for Atmospheric Research

Publication Date 2026-03-13
Digital Object Identifier (DOI) Not Assigned
Alternate Identifier d090004
Resource Version N/A
Topic Category climatologyMeteorologyAtmosphere
Progress onGoing
Metadata Date 2026-03-15T04:17:35Z
Metadata Record Identifier edu.ucar.gdex::d090004
Metadata Language eng; USA
Suggested Citation National Oceanic & Atmospheric Administration. (2026). NOAA - Conventional Observation Reanalysis (CORe). NSF National Center for Atmospheric Research. https://gdex.ucar.edu/datasets/d090004. Accessed 15 March 2026.

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